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https://issues.apache.org/jira/browse/TAJO-1426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14372861#comment-14372861
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ASF GitHub Bot commented on TAJO-1426:
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Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/441#issuecomment-84378037
@navis your work is nice in overall. I left some comments.
Honestly, I'm writing tests to verify generated plans while working on
improving join ordering (https://issues.apache.org/jira/browse/TAJO-1352).
However, your test approach using the explain query looks better than mine. So,
I'd like to share some challenges which I met.
* Left and right children of a commutative join (inner and cross) are
interchangeable with each other. So, the plan can be changed.
* The order of shuffle keys between execution blocks can be changed.
These challenges should be addressed to validate query plans.
> Support "explain physical" to get physical plan
> -----------------------------------------------
>
> Key: TAJO-1426
> URL: https://issues.apache.org/jira/browse/TAJO-1426
> Project: Tajo
> Issue Type: Improvement
> Reporter: Navis
> Assignee: Navis
> Priority: Minor
>
> Inconvenient to see that in log file.
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